Randy Holmes-Farley
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Randy would kalkwasser dissolve in 1.025 salt water. Could it be a useful method to recirculate aquarium water through a vessel/canister containing kalk and slowly dripping it in a sump? Perhaps,mixing periodically and allowing to settle? Kind of like a calcium reactor uses recirculated aquarium water. Is this possible?
No, if you mix it into seawater you get a mess of precipitated calcium carbonate and magnesium hydroxide.